Dianne Nicholas, M.D.
NPI 1679553499 · Emergency Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dianne Nicholas, M.D. is a Emergency Medicine Physician provider in Houston, TX (NPI 1679553499).
Provider details
- NPI number
- 1679553499
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- J2238 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
28 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 28 | $119 |
Typical Medicare-allowed amounts for these services range $119–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 111 | 32 |
| Atorvastatin Calcium | 101 | 25 |
| Semaglutidebrand: Ozempic | 54 | — |
| Lisinopril | 41 | 11 |
| Glipizidebrand: Glipizide Er | 33 | — |
| Metformin Hcl | 33 | — |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-18
- Last updated
- 2009-08-28
Frequently asked questions
- What is Dianne Nicholas's NPI number?
- Dianne Nicholas's National Provider Identifier (NPI) is 1679553499, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dianne Nicholas's specialty?
- Dianne Nicholas is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dianne Nicholas located?
- Dianne Nicholas's practice location on file with NPPES is 5160 Timber Creek Dr, Houston, TX 77017-5968.
- What is Dianne Nicholas's phone number?
- The practice phone number listed in the NPPES registry for Dianne Nicholas is (713) 440-0602.
- Does Dianne Nicholas accept Medicare?
- Dianne Nicholas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dianne Nicholas's NPI active?
- Yes — Dianne Nicholas's NPI (1679553499) is active in the NPPES registry as of the last update on 2009-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.